KeywordsUtil.java |
1 /** 2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved. 3 * 4 * 5 * 6 * 7 * The contents of this file are subject to the terms of the Liferay Enterprise 8 * Subscription License ("License"). You may not use this file except in 9 * compliance with the License. You can obtain a copy of the License by 10 * contacting Liferay, Inc. See the License for the specific language governing 11 * permissions and limitations under the License, including but not limited to 12 * distribution rights of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 20 * SOFTWARE. 21 */ 22 23 package com.liferay.util.lucene; 24 25 import com.liferay.portal.kernel.util.StringPool; 26 import com.liferay.portal.kernel.util.StringUtil; 27 28 /** 29 * <a href="KeywordsUtil.java.html"><b><i>View Source</i></b></a> 30 * 31 * @author Brian Wing Shun Chan 32 * @author Mirco Tamburini 33 * @author Josiah Goh 34 */ 35 public class KeywordsUtil { 36 37 public static final String[] SPECIAL = new String[] { 38 "+", "-", "&&", "||", "!", "(", ")", "{", "}", "[", "]", "^", "\"", "~", 39 "*", "?", ":", "\\" 40 }; 41 42 public static String escape(String text) { 43 for (int i = SPECIAL.length - 1; i >= 0; i--) { 44 text = StringUtil.replace( 45 text, SPECIAL[i], StringPool.BACK_SLASH + SPECIAL[i]); 46 } 47 48 return text; 49 } 50 51 public static String toFuzzy(String keywords) { 52 if (keywords == null) { 53 return null; 54 } 55 56 if (!keywords.endsWith(StringPool.TILDE)) { 57 keywords = keywords + StringPool.TILDE; 58 } 59 60 return keywords; 61 } 62 63 public static String toWildcard(String keywords) { 64 if (keywords == null) { 65 return null; 66 } 67 68 if (!keywords.endsWith(StringPool.STAR)) { 69 keywords = keywords + StringPool.STAR; 70 } 71 72 return keywords; 73 } 74 75 }